Saitama Railway Saitama Tozuka Tunnel
|Orderer||Japan Railway Construction, Transport and Technology Agency|
|Structure and scale||Slurry type shield method, outer diameter: φ9.7m; finishing internal diameter: φ8.4m; tunnel length: 1,948m|
This is a sealed tunnel linking Tozuka-Angyo Station and Higashi-Kawaguchi Station on the Saitama Railway Line. A NOMST wall was used for the departing section and the two surfaces of the intermediate ventilation room shield penetration section. In the shield arrival section, it is a tunnel that has successfully cut through the JR Musashino Line bridge pier protection bulkhead through super neighboring construction (distance of 10cm or less).